INFINITI I35 overheating issue after valve gasket and spark plug replacement, no leaks found on INFINITI I35

Some INFINITI I35 owners report experiencing overheating issues following valve gasket and spark plug replacements, even when no leaks are detected. Potential causes include problems with the coolant system, such as air pockets or improper bleeding, which can lead to overheating. Additionally, a malfunctioning thermostat may disrupt the engine's cooling system, while a faulty water pump might fail to circulate coolant properly. Blockages in the radiator can also impede cooling efficiency, and a malfunctioning radiator fan may not cool the radiator adequately. Furthermore, unresolved combustion issues, like misfires, can contribute to overheating. To address these concerns, owners are advised to check coolant levels, verify the thermostat's functionality, inspect the water pump, examine the radiator for blockages, test the radiator fan, and resolve any combustion issues. If the overheating persists, consulting a professional mechanic or dealership for a thorough diagnosis is recommended.